package com.manner.groupon.utils;

import cn.hutool.json.JSONUtil;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.util.UriUtils;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.LinkedHashMap;
import java.util.Map;

@Slf4j
public class AddressUtil {

    public static String url = "https://api.map.baidu.com/geocoding/v3?";

    public static String AK = "KiKCOhx98YKHH2oBKN31pNT5Wxy4B696";

    public static Location getAddress(String address) throws Exception {

        Map params = new LinkedHashMap<String, String>();
        params.put("address", address);
        params.put("output", "json");
        params.put("ak", AK);
        params.put("ret_coordtype", "gcj02ll");


        return requestGetAK(url, params);
    }

    /**
     * 默认ak
     * 选择了ak，使用IP白名单校验：
     * 根据您选择的AK已为您生成调用代码
     * 检测到您当前的ak设置了IP白名单校验
     * 您的IP白名单中的IP非公网IP，请设置为公网IP，否则将请求失败
     * 请在IP地址为xxxxxxx的计算发起请求，否则将请求失败
     */
    public static Location requestGetAK(String strUrl, Map<String, String> param) throws Exception {
        if (strUrl == null || strUrl.length() <= 0 || param == null || param.size() <= 0) {
            return new Location();
        }

        StringBuffer queryString = new StringBuffer();
        queryString.append(strUrl);
        for (Map.Entry<?, ?> pair : param.entrySet()) {
            queryString.append(pair.getKey() + "=");
            //    第一种方式使用的 jdk 自带的转码方式  第二种方式使用的 spring 的转码方法 两种均可
            //    queryString.append(URLEncoder.encode((String) pair.getValue(), "UTF-8").replace("+", "%20") + "&");
            queryString.append(UriUtils.encode((String) pair.getValue(), "UTF-8") + "&");
        }

        if (queryString.length() > 0) {
            queryString.deleteCharAt(queryString.length() - 1);
        }

        URL url = new URL(queryString.toString());
        System.out.println(queryString.toString());
        URLConnection httpConnection = (HttpURLConnection) url.openConnection();
        httpConnection.connect();

        InputStreamReader isr = new InputStreamReader(httpConnection.getInputStream());
        BufferedReader reader = new BufferedReader(isr);
        StringBuffer buffer = new StringBuffer();
        String line;
        while ((line = reader.readLine()) != null) {
            buffer.append(line);
        }
        reader.close();
        isr.close();
        log.info("返回信息为 : {}", buffer.toString());
        String replace = buffer.toString().replace("showLocation&&showLocation(", "").replace(")", "");
        return JSONUtil.toBean(replace, Location.class);
    }

    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public static class Location {
        private int status;

        private Result result;
    }

    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class Result {

        private LocationResult location;

    }

    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class LocationResult {

        private Double lng;

        private Double lat;

    }

}
